<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        body{
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            flex-direction: column;
            background-color: #040d15;
        }
        a{
            position: relative;
            display: inline-block;
            padding: 12px 36px;
            margin: 10px 0;
            clear: #fff;
            text-decoration: none;
            text-transform: uppercase;
            font-size: 18px;
            letter-spacing: 2px;
            border-radius: 40px;
            background: linear-gradient(90deg,#0162c8,#55e7fc);
            overflow: hidden;
        }
        a:nth-child(2){
            background: linear-gradient(90deg,#755bea,#ff72c0);

        }
        span{
            position: absolute;
            background:#fff;
            transform: translate(-50%,-50%);
            pointer-events: none;
            border-radius: 50%;
            animation: animate 1s linear infinite;

        }
        @keyframes animate {
            0%{
                width: 0px;
                height: 0px;
                opacity: 0.5;
            }
            100%{
                width: 500px;
                height: 500px;
                opacity: 0.5;

            }
        }
    </style>
</head>
<body>
    <a href="#">BUTTON</a>
    <a href="#">BUTTON</a>
    <script>
        const buttons = document.querySelectorAll("a");
        buttons.forEach(btn => {
          btn.addEventListener('click',function(e){
            let x = e.clientX - e.target.offsetLeft;
                let y = e.clientY-e.target.offsetTop;
                let ripples = document.createElement('span');
                ripples.style.left = x+"px";
                ripples.style.top = y+"px";
                this.appendChild(ripples);
                setTimeout(()=>{
                    ripples.remove();
                },1000)
          })
        });
    </script>
</body>
</html>